Title:
TORQUE LIMITER
Document Type and Number:
Japanese Patent JP2004036843
Kind Code:
A
Abstract:
To improve durability with simple constitution and to prevent torque ripple to generate prescribed torque in a torque limiter.
A coil spring 33 is mounted to the outer peripheral surface of a cylindrical member 32 extending in a prescribed direction. When rotational force is applied to the coil spring, torque is generated corresponding to frictional force generated between the cylindrical member and the coil spring. An iron-based sintered alloy is used for the cylindrical member, and the surface hardness of the cylindrical member is set to 1.4 to 1.7 times of the surface hardness of the coil spring. Further, the ten-point surface roughness of the coil spring is set to 1μm to 5μm, preferably 3μm to 5μm.
Inventors:
TANAKA MANABU
Application Number:
JP2002197795A
Publication Date:
February 05, 2004
Filing Date:
July 05, 2002
Export Citation:
Assignee:
KYOCERA CORP
International Classes:
F16D7/02; (IPC1-7): F16D7/02
Attorney, Agent or Firm:
Masahisa Takahashi
Hisamaru Hanada
Hisamaru Hanada
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